Strongly driven one-atom laser and decoherence monitoring

P. Lougovski, F. Casagrande, A. Lulli, and E. Solano
Phys. Rev. A 76, 033802 – Published 7 September 2007

Abstract

We propose the implementation of a strongly driven one-atom laser, based on the off-resonant interaction of a three-level atom in Λ configuration with a single cavity mode and three laser fields. We show that the system can be described equivalently by a two-level atom resonantly coupled to the cavity and driven by a strong effective coherent field. The effective dynamics can be solved exactly, including a thermal field bath, allowing an analytical description of field statistics and entanglement properties. We also show the possible generation of quantum superposition (Schrödinger cat) states for the whole atom-field system and for the field alone after atomic measurement. We propose a way to monitor the system decoherence by measuring atomic populations. Finally, we confirm the validity of our model through numerical solutions.

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  • Received 9 February 2007

DOI:https://doi.org/10.1103/PhysRevA.76.033802

©2007 American Physical Society

Authors & Affiliations

P. Lougovski2, F. Casagrande1, A. Lulli1, and E. Solano3,4

  • 1Dipartimento di Fisica, Università di Milano, Via Celoria 16, 20133 Milano, Italy
  • 2Hearne Institute for Theoretical Physics, Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, Baton Rouge, Louisiana 70803, USA
  • 3Physics Department, ASC, and CeNS, Ludwig-Maximilians-Universität, Theresienstrasse 37, 80333 Munich, Germany
  • 4Sección Física, Departamento de Ciencias, Pontificia Universidad Católica del Perú, Apartado 1761, Lima, Peru

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Issue

Vol. 76, Iss. 3 — September 2007

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